Atomizer oil burner



ATOMIZER OIL BURNER Filed Mamh 17. 1924 Patented Jan. 10, 1928.

UNITED STATES HARRISON L. s'rALEY, orriAnrronn, CONNECTICUT. 1

AToMrznn on. BURNER.l j 4 Application mea Marcil 17, 1924. semaine; 699,884. j

This invention has relation torthat type'of oil burner in which the oil is atomized by and ycommingled with steam prior toy injection intoA the combustion chamber, and the 5 special object ofthis invention is to so construct the atoniizingrdevice that steam will be usedv at boiler pressure at the atomizer nozzle, thereby insuring a more minute subdivision of the oil .and a more thorough commingling of the atomized oil andsteam, as more specifically hereinafter set forth. In the drawing" 1 Fig. 1 is a longitudinal sectional view of one form of my device; f 2' is a similar view of another form ofmy device. f Y

Referring to the form of device shown in Fig. 1, 5 designates la mixing chamber, through the sidewall of which enters the oilconduit 6, the inner'end ofthis vconduit be-v ing turned at right-angles so as to deliver theoil in an outward direction soas to form an outwardly-directed nozzle, the interior of 4 the end of the nozzle being bevelled to form a seat for the bevelled end of'a valve-pin 7. This valve-pin is slidingly mounted ina tube 8 and its outer end- 9 is threaded into a bracket' 10 for adjustment purposes,-"a hand-wheel 11, preferably graduated, being 3o affixed to the valve-pin forconveniently. ro-

tatingit in adjusting it toward and fromthe nozzle to regulate the vquantity of oil gde-y` livered into 'the mixing-chamber- Steam enters the mixing-chamber at the opposite side from the oil-inlet 6 by means of a conduit 12, the inner endy ofthis conduitterminating in a 'cylinder 18 which sur` rounds the oil-nozzle and is concentric theren with. the cylinder being suiiiciently larger 40 than/the cylindrical nozzle toform an annular space therearound. The nozzlekpipe 6 extends through the wall of the cylinder near the inner end thereof, which inner end is desirably closedjby ay hemispherical wall 14.y The outer endcf they cylinder 13 is open and terminates. within the mixingchamber. i The forwardend of they mixingchamber is closed by a screw-capl, into which the inner end of the aforesaid' tube 8 is threaded, the inner end of saidA tube 8 .ter-

minating within the mixing-chamber- The cap 15 is provided with a cylindrical cavity 16 in alinement with 'the `cylinder 13,.:11111 slidingly mounted in the cylinder 13 is an atomizer-throttlevalve "17 of cylindrical form, this valveextending across' the space between the outer end of the cylinder 13 and the cap"15,'gso that'its f outer end will slid- Vnzly WOrkV in the cylindrical cavity 16 iin the capi j y The cylindrical valve 17 'abuts ythe inner Vend of the tube V8and its'outer'end is provided with a holek through whichthe inner end, ofthe .valve-pin`7 slides. The valve 17 can' therefore be `radjusted Vbackv and forth screwing the tube`8 in or out, a'Wthumb-whe'el 18 vbeing*provided for conveniently turning said tube-'8,and suitable stufiing-boxes 19 and 20 beingprovidedto;preventwthe escape' ofst'eam.` fIt will"`beobserved that theoilvalve 7 and the steam-valve 17 may be adl'juste'dindependently. j,

The `steam-'valve 17 is inthe form 0f aV hollow cylinder whose outer end is closed except that, vkas stated, a cent-ralhole is provide'djffor' the passage of the oil-valve 7.

`The cylinder 'is yholl'ow'and surrounds 'the "oil-nozzle', the inner end :of the cylinderbeingopen to the'steamfchamber, Aboutmidway the lengthof the cylinder valve 17 it isprovided with vaninterior annular rib 21 which isbevelled on its inner face soas to cooperate 'with a bevelled* valve-Seaton the outer "side" of the oil-nozzle, so that byv forcing the. valve cylinder `inw`a`rdl'y,jthev bevelled face of the rib 21 closes against the bevelled outer valve-seat 'on the nozzle and thus f throttle's thesteam. `The valvecylinder 17,

at a point between the valve-rib 21 and the outerclosedkend ofy the .valve cylinder is pro vided with an annular port 22 YLwhich come municates all around with the annular mix .ing-chamber, the adjacent part of thelwall Vof the cap 15gbeing, concaved at 23 `for the `purpose of assistingin reversing the atom ized oil and steam and throwing the saine back intofthe mixing-chamber. The annular port 22in thevarlvel cylinder is crossed at intervals by spider members 24 which serve` merelyas a meansof connecting thehead of the cylinder to the inner part ofy the'cylinder. j l

It will vbe observed' that `in the construc- 'tion described, an annularf'streamof steam is maintained I4around the oil-nzz'le andthat the atomized oilwill be yprojected annularly fore eXit at the inixturedischarge-opening 25, which, as usual, leads to the combustion,

chamber. The oil is discharged` from the nozzle 6 in the form oan annular lilinandl the steam is discharged in a similar form surrounding` the annular'body of oil, and the. beyelledfaces of the partswhich form the steam nozzlevare so arranged that the annular body of steam is directed across the issuinglilm of oil, thereby insuring an im'- ,properly direct the Geminiani-@d Oil. and

`mediate comminutingof the oil. It Willbe observed that the annular port 2.2` of the valve cylflinderhas its Walls Curved so as to steam againstthe endv Wall ofthe mixing- .chamber all around the saine, thereby pro,-

viding ai practically unobstructed passageu way into their mixing-chamber, thea-,obstructions olered the tivoor three spider membersQtbeing negligible.v The pressure of the steam normally holds the valjYe ycylinder acfainst' the innerend ofthe abutment t3 y s i adjusting-tube .8,

It will therefore bef obseryedthat the atomizervalve 17 forms also ther-,throttlevalv of the steam Supply, o?, in; other worls, the steam throttle, issopositioned and constructed that it performs the additional ifunction.A ot angatomiz-er. In this .class of burners as heretoforev constructed, the steam has always been throttled at apoint distant fronithe atomizer, so that the steam atfthe atomizing point was. alwaysfbelow boiler pressure. In my construction. it will be observedfthat no. 4matter how. fine YI throtv .tledoWn ythe steam, itv is 4still at boiler pressure, whereby the atomiza-tion of Y the oil to a, very thorough extent is,` insured inv` every adjustment `oi", ,the steam atomizer valve. Thus bringing boiler `pressure to. the. atomizing point has the further advantage that the aspirating function is greatly increased ascompared-With theburners now generally useflrwhereba I am abi-etosreatlr were@ oraentirely do away with the need ,for supplying theyoilunder pressure,`

In'the construction shown in. 2, I haveswiv'elled the atomizing valveffto tube .Sso thatzthe valve may be moved positively back andforth. I' havealsoset back. the

y atomizing nozzlemembers from the point of kexit ofthey oil,the bevelled valve-seat on the vnozzle l.tube bei-ng` formed on ,theA outer Y face of the annular rib 26 on the nozzle tube insure a steady support for the inner end of the valve stem 7. The tubular extension 27 is provided with an annular series of openings .28 for the admission of the Oil directly into the annular stream otstcam coming from the steam nozzle. The cap 15 is not screwed to the mixing-chamber, as in Fig. 1, butis clamped thereto-by a ring 29. By reinoying, the cap 15 in either construction, it Wi'llbe observed that I get access to all the` Working. partsvvhereby I am enabled to clean and repair the interior parts very readily and Without dismantling the; Whole structure. It Will be observed alsothat by graduatingthe thumb-Wheels 1lV and 18, I facilitate. the proper operationof. the der vice, since` after l get the desired character o fiiame, by the trial method, with acertain pressure of steainzand oil, I can, by noting `the,positions-,of the Wheels on the scales, get that adjustment again Without didi,- Qultvf What I claim as new is: i

l. An atomizing apparatus for oil ,burners embodying al mixing-,chamber yclosed aty its outer end and havinglvan-exit for the mixture atits other end, an oil-nozzle` and an adjustable valve therefor, a steam-supply vIconduit-Y leading to Vthe oil-nozzle, and a thiottlefvalve adjacentthe. oil-'nozzle Vconstructedto atomize andaspirate thefoil at ,noz/:71%, said nozzles ,beingV located Within the inixingvchaniberandarranged to d1- rect the minturetoward saidA clOSQfl outer f end of the mixing-chamber so that the mixturem-ustreverse before making its exit to the;combustlonechamber.

2. Anatomizing apparatus for oil burners embodying ajmixing chamber closed atV its outer end and haringv an exit for the mix`- ture at its( other end, anYoil-nozzle. andan adjustable valre therefor, a steam-supply conduit leading to the oil-nozzle, and ,an .adjustable steam throttle-.valve adjacent the oil-nozzle constructedto atomize and aspirate the oil at said nozzle, said oilfnozzleentei-:ing` the mixing-chamber and extending outwardly away from saidexigsaid stea1n supply. conduit entering the mifxillgchamber .and therein formedV intov a cylinder sui'- Ionniling the nozzle and havingy its outer @11d open, said kthrottle-valvey being slidingly mounted in said cylinder.

3. In an oil-burner of the typel set forth,

amiXing-,chamber having a closed outer end and ail-open inner end for delivering the mixture ,to the combustion-chamber, an oilnozzle enclosed Within the mixing=chamber and `directed toward said closed end, a

steam-nozzle surrounding theoil-nozzle and likewise enclosed Within said-vmixing-cham-v ber and directed-toward said closed end, a steamwalve surrounding the oil-.nozzle and haymg an annular lateral, discharge port for delivering the mixture into the outer end of threaded connection With the outer end of the mixing-chamber, a tubular valve-stem said oil-valve to permit the same to be adthreaded through an opening in the forward justed independently of the steam-valve. 1 `end of the mixing-chamber for operating In testimony whereof I hereunto aiix my 5 the steam-valve, an oil-valve slidingly exsignature.

tended through said tubular stem and'into the steam-valve, and a bracket having a, HARRISON STALEY. 

